Prestashop Webservice helpful functions

ps_webservice_functions.php

/**
  * Update the stock of a product after create it through the api
  * Tested on PrestaShop 1.7.1.1
  *
  * @link https://github.com/haka002/PrestaShop-webservice-lib PrestaShop 1.7 WebService lib
  *
  * @param SimpleXMLElement $product
  * @param int $quantity
  *
  * @return void
  */
function set_product_quantity( $product, $quantity ){

  try{

    $webservice_client = new PrestaShopWebservice('http://localhost/ps', 'apikeygoeshere', true);

    foreach( $product->product->associations->stock_availables->stock_available as $item ){

      $xml = $webservice_client->get( array('url' => 'http://localhost/ps/api/stock_availables?schema=blank') );
      $resources = $xml->children()->children();
      $resources->id = $item->id;
      $resources->id_product  = $product->product->id;
      $resources->quantity = $quantity;
      $resources->id_shop = 1;
      $resources->out_of_stock = 1;
      $resources->depends_on_stock = 0;
      $resources->id_product_attribute = $item->id_product_attribute;

      $xml = $webservice_client->edit(array(
        'resource'  =>  'stock_availables',
        'putXml'    =>  $xml->asXML(),
        'id'        =>  $item->id
      ));

    }

  }catch( PrestaShopWebserviceException $e ){
    die($e);
  }

}